Bug 399218

Summary: Drawn lines are fuzzy and fonts are badly rendered when fractional display scaling is used
Product: [Applications] kolourpaint Reporter: Patrick Silva <bugseforuns>
Component: generalAssignee: kolourpaint-support
Status: RESOLVED DUPLICATE    
Severity: normal CC: evren320, postix
Priority: NOR    
Version First Reported In: 24.05.1   
Target Milestone: ---   
Platform: Arch Linux   
OS: Linux   
Latest Commit: Version Fixed/Implemented In:
Sentry Crash Report:
Attachments: screenshot

Description Patrick Silva 2018-09-29 16:54:51 UTC
Created attachment 115308 [details]
screenshot

STEPS TO REPRODUCE
1. set your display scaling factor to 1.2 in system settings > display and monitor > scale display
2. restart plasma session
3. open kolourpaint, use some tool to draw lines, circles, squares or write text

OBSERVED RESULT
Drawn lines look fuzzy, text has bad font rendering. See the screenshot please.

EXPECTED RESULT
crisp lines, correct font rendering

SOFTWARE VERSIONS
Arch Linux
Kolourpaint 18.08.1
KDE Plasma Version: 5.14 beta
KDE Frameworks Version: 5.50
Qt Version: 5.11.2
Comment 1 Patrick Silva 2019-10-12 11:08:50 UTC
this issue persists with kolourpaint 19.08.2.

Operating System: Arch Linux 
KDE Plasma Version: 5.16.90
KDE Frameworks Version: 5.62.0
Qt Version: 5.14.0 beta1
Comment 2 Evren 2024-06-18 12:26:34 UTC
I can confirm the bug still persists

KolourPaint 24.05.1
ArchLinux 6.9.5
Plasma 6.0.5
Framework: 6.3.0
Qt: 6.7.1
Xorg on SDDM
Comment 3 Christoph Feck 2024-07-31 20:11:34 UTC

*** This bug has been marked as a duplicate of bug 436615 ***